From: Olaf Kirch <okir@suse.de>
To: Brad Barnett <lists@L8R.net>
Cc: nfs@lists.sourceforge.net
Subject: Re: knfsd brought to its knees, by a simple rsync or cp operation
Date: Tue, 1 Mar 2005 15:37:32 +0100 [thread overview]
Message-ID: <20050301143732.GA22324@suse.de> (raw)
In-Reply-To: <20050301065703.7e52cf4e@be.back.l8r.net>
On Tue, Mar 01, 2005 at 06:57:03AM -0500, Brad Barnett wrote:
> Within 10 seconds, the output of ls -R /home slows. Within 20 seconds, it
> _stop_. It then sits there for seconds, and spews out a page in small
> jumps. Again, a ls /raid/home on the _server_ barely slows, and is
> constant.
>
> I'm really scratching my head here.
Well, it sounds like something's eating the network bandwidth,
or otherwise interfering with nfsd responsiveness. Again, are
you using UDP or TCP? If UDP, look at nfsstat output to see if
you have a high retransmit count.
If it's really a problem with scheduling, it should make a difference
if you run the rsync job with lower priority, and/or renice the
nfsd threads to run with higher priority.
Olaf
--
Olaf Kirch | --- o --- Nous sommes du soleil we love when we play
okir@suse.de | / | \ sol.dhoop.naytheet.ah kin.ir.samse.qurax
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next prev parent reply other threads:[~2005-03-01 14:37 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-26 13:28 knfsd brought to its knees, by a simple rsync or cp operation Brad Barnett
2005-02-28 10:06 ` Olaf Kirch
2005-02-28 15:23 ` Brad Barnett
2005-02-28 15:44 ` Olaf Kirch
2005-02-28 16:20 ` Brad Barnett
2005-03-01 9:55 ` Olaf Kirch
2005-03-01 11:57 ` Brad Barnett
2005-03-01 14:21 ` Roger Heflin
2005-03-01 14:37 ` Olaf Kirch [this message]
2005-03-01 23:10 ` Brad Barnett
2005-03-02 9:03 ` Olaf Kirch
2005-03-02 16:41 ` Brad Barnett
2005-03-01 15:04 ` Bill Rugolsky Jr.
2005-03-01 16:08 ` Bill Rugolsky Jr.
2005-03-01 23:38 ` Brad Barnett
2005-03-01 23:40 ` Brad Barnett
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